Answer:
The means for times for the first round of the 100 meter men’s swim is 52.64789 seconds
The satandar deviation for times for the first round of the 100 meter men’s swim is 7.60182 seconds
Step-by-step explanation:
The sample mean for a set of n data is given by:
[tex]\bar X = \frac{1}{n}\sum{x_i}[/tex]
In other words, the sample mean of the times for 71 times of the first round measured in seconds is:
[tex]\bar X = \frac{1}{71}\sum{x_i} = 52.64789[/tex] seconds
The sample standard deviation for a set of n data is given by:
[tex]S = \sqrt{\frac{1}{n-1}\sum{(x_i - \bar x)^2}}[/tex]
In other words, the sample standard deviation of the times for 71 times of the first round measured in seconds is:
[tex]S = \sqrt{\frac{1}{n-1}\sum{(x_i - \bar x)^2}} = 7.60182[/tex] seconds
